Nature contre nature is a French television film comedy, broadcast in 2004, directed by Lucas Belvaux, and scripted by Lucas Belvaux with Jean-Luc Gaget.
Sébastien Chantoux, (Lucas Belvaux), a psychoanalyst, leaves Paris and goes to live in the Creuse, at Royère-de-Vassivière.
Hardly settled, he discovers "Troc'En Creuse", a system of local exchange that operates through the use of barter.
Initially reticent about using it and bartering his psychoanalytic sessions, he is reconciled to the system, and in a few weeks becomes a figure in the community.
War is declared; "Troc'En Creuse" and the small local economy against the capitalism of the state.